Patents by Inventor Da Keng

Da Keng has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Reinforced firearm sight support ring
    Patent number: 6629381
    Abstract: A reinforced scope ring can be used singly or in pairs and can be affixed to a Weaver or Picatinny rail. The reinforced scope ring includes a base, a removable jaw attached to the base by first and second transverse threaded fasteners and first and second knurled nuts, first and second semi-cylindrical split rings and a substantially semi-cylindrical top ring member which is removably attached to the base. The base includes first and second apertures aligned perpendicular to the scope axis and spaced apart by approximately 0.80 inches to engage alternate transverse notches in the Picatinny rail. The first and second transverse threaded fasteners have an elongate body with a substantially rectangular cross section to provide transverse lug surfaces tending to fill the transverse notches in the Picatinny rail and engage notch surfaces in the left and right rail members.
    Type: Grant
    Filed: February 1, 2000
    Date of Patent: October 7, 2003
    Inventor: Da Keng
  • Bipod mounting device
    Patent number: 5815974
    Abstract: A bipod mounting assembly for attaching a bipod to the forearm stock portion of a firearm, which includes a mounting yoke adapted to quickly and easily attach to the swivel stud connector mounted to the forearm stock portion of the firearm. The mounting yoke is adapted to receive a mounting block thereover, with the mounting block being attached to the mounting yoke to thus attach the mounting block to the forearm stock portion of the fire arm. A bipod mounting frame that includes a pair of extensible telescoping legs is releasably attachable to the mounting block by a quick-release locking catch to enable the quick attachment/detachment of the legs of the bipod from the mounting block, and thus the firearm. In one embodiment the mounting yoke has a threaded stud that extends through the mounting block and receives a securing bolt to secure the mounting block to the firearm.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: October 6, 1998
    Inventor: Da Keng
  • Bipod mounting device
    Patent number: 5711103
    Abstract: A bipod mounting assembly for attaching a bipod to the forearm stock portion of a firearm, which includes a mounting yoke adapted to quickly and easily attach to the swivel stud connector mounted to the forearm stock portion of the firearm. The mounting yoke is adapted to receive a mounting block thereover, with the mounting block being attached to the mounting yoke to thus attach the mounting block to the forearm stock portion of the fire arm. A bipod mounting frame that includes a pair of extensible telescoping legs is releasably attachable to the mounting block by a quick-release locking catch to enable the quick attachment/detachment of the legs of the bipod from the mounting block, and thus the firearm.
    Type: Grant
    Filed: October 13, 1995
    Date of Patent: January 27, 1998
    Inventor: Da Keng
  • Pistol rear sight
    Patent number: D447205
    Type: Grant
    Filed: January 27, 2000
    Date of Patent: August 28, 2001
    Inventor: Da Keng
  • Removable mount for firearm sight
    Patent number: D447532
    Type: Grant
    Filed: February 1, 1999
    Date of Patent: September 4, 2001
    Inventor: Da Keng
  • Rifle scope mount and receiver cover
    Patent number: D364668
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: November 28, 1995
    Inventor: Da Keng